利用电阻率技术在尼日利亚东南部克罗斯河州Obudu基底地形圈定地下水电位带

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-10-25 DOI:10.2166/wpt.2023.174
Ebong Dickson Ebong, Chimezie N. Emeka, Oualid Melouah, Rose Ullah, Anthony Ita, Jamal Asfahani
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引用次数: 0

摘要

摘要地下地下水勘探具有一定的挑战性。含水层参数,如水力传导率和透水率,可以帮助预测地下水潜在带在地下室地形。采用斯伦贝谢配置的垂直电测深技术,绘制了尼日利亚东南部Obudu Complex结晶基底的地下层图。利用二次电阻率数据(Dar Zarrouk参数)和一些泵送试验得出的水力参数(即透射率和导电性)建立经验模型。这些模型用于预测只有地电参数(即含水层厚度和电阻率)存在的位置的水力参数。结果表明,研究区东北部和主要断裂带内的地区的水力导水率和透水率相对较高。将研究区划分为地下水潜力良好、中等和差3个含水层。这种综合方法可以在具有类似地质条件的其他地区采用,在这些地区,抽水试验信息很少或有限,作为预测含水层性质和划定地下水潜在带的替代方法,以促进地下水资源的可持续发展和管理。
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Delineation of groundwater potential zones using electrical resistivity technique in Obudu basement terrain of Cross River State, Southeastern Nigeria
Abstract Groundwater exploration in basement terrain can be somewhat challenging. Aquifer parameters like hydraulic conductivity and transmissivity can help in predicting groundwater potential zones in basement terrains. The vertical electrical sounding investigation that involved the Schlumberger configuration was employed to map the subsurface layers within the crystalline basement of the Obudu Complex, southeastern Nigeria. Secondary electrical resistivity data (Dar Zarrouk parameters) and a few pumping test-derived hydraulic parameters (i.e., transmissivity and hydraulic conductivity) were employed to develop empirical models. These models were used to predict hydraulic parameters at locations where only geoelectrical parameters (i.e., aquifer layer thickness and electrical resistivity) exist. Results showed that the northeastern part of the study area and areas located within zones of major faults displayed relatively higher values of hydraulic conductivity and transmissivity. The study area was classified into good, moderate, and poor groundwater potential aquifer zones. This integrated approach can be adopted in other areas with similar geology, where pumping test information is scarce or limited, as an alternative means of predicting aquifer properties and delineating groundwater potential zones for sustainable development and management of groundwater resources.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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